<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    {{message}}
</div>
<div id="app2">
   <span v-bind:title="message">
       鼠标悬浮  查看绑定值
   </span>
</div>


<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<script>
    var vm=new Vue({
        el:"#app",
        data:{
            message:"hello vue"
        }
    });

    var vm=new Vue({
        el:"#app2",
        data:{
            message:"hello vue绑定值"
        }
    });

</script>
</body>
</html>